Disclosed is a data security storage system for office public computers. The system comprises computers and work permits; each computer comprises an information storage unit, a radio frequency information reading unit, a judging unit, a triggering unit, an encrypted unit and a decryption unit; radio frequency labels are arranged on the work permits; names, working departments, working position information of staff are stored on the radio frequency labels; information stored in each radio frequency label is stored in the storage units; the radio frequency information reading units are used for reading the information stored in the radio frequency labels within a preset range; the triggering units are used for monitoring whether or not a user executes a data reading or data saving action in real time, and when the user executes the data saving action, the triggering units send first signals to the judgment units; when the user executes the data reading action, the triggering units send second signals to the judgment units.